JEE Advance - Chemistry (2003 - No. 5)
Calculate the molarity of water if it's density is 1000 kg/m3
18 M
1 M
1000 M
55.55 M
0.018 M
Vysvětlení
Molarity is
calculated by dividing the number of moles of solute in the solution by the volume of the solution in liters.
Given, 1 L of water = 1 kg = 1000 g (because density = 1000 kg m−3).
Therefore, the number of moles of solute present
= $${{1000} \over {18}}$$ = 55.55 mol of H2O
So, the molarity is 55.55 mol/1 L = 55.55 M.
Given, 1 L of water = 1 kg = 1000 g (because density = 1000 kg m−3).
Therefore, the number of moles of solute present
= $${{1000} \over {18}}$$ = 55.55 mol of H2O
So, the molarity is 55.55 mol/1 L = 55.55 M.